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Entropic Gravity on a Dark Superfluid — analysis code and frozen prediction ledgers

DOI

Code, derived products, and pre-registered prediction ledgers for a six-manuscript series deriving the Milgrom acceleration scale a₀ = c²√(Λ/24π) from the Dorau–Much relative-entropy theorem (PRL 136, 091602) joined to Berezhiani–Khoury superfluid dark matter (PRD 92, 103510) by two postulates — and staking the result on a frozen, single-fork Gaia DR4 wide-binary prediction (δṽ = 0.12–0.17) decided on 2026-12-02.

Manuscripts: deposited at DOI 10.5281/zenodo.21561506 (arXiv IDs added when posted)

Paper Content
I (flagship) assumptions [A1–A4], the a₀ law, counted G_ph, dark-energy sector, master results ledger [N1–N22]
II the pulsar-timing ceiling K₉₅ = 5.6×10⁻¹³ s² kpc⁻¹ (self-contained archival measurement)
III dark-matter phenomenology, carrier identity card, falsification calendar
IV the quintic superfluid: exact black soliton, branch-edge physics, laboratory analog
V the σ-resolved radial-acceleration relation: the break, its baryonic ceiling, the carrier-mass band
Letter the a₀ = c²√(Λ/24π) result in PRL format

What is (and is not) in this repository

  • analysis/ — every analysis script (guards, freezes, pipelines, derivation chain, hardening suites, figures).
  • derived/ — frozen prediction ledgers (*_locked_predictions*.json) and per-step JSON results. The ledgers are the pre-registration record: each embeds the UTC timestamp and development-repository commit hash at freeze time, and revisions only ever append versioned entries with logged reasons.
  • Not included: archival datasets (large; all public — download table below), manuscript sources, and internal working documents. Figures regenerate from analysis/paper_figures.py.

Data: what is used, where to get it

Scripts expect the layout below (paths relative to the repository root). Nothing here is proprietary; every dataset is a published archive.

Dataset Used by Source Local path
NANOGrav 15 yr narrowband v2.1.0 (single-pulsar noise chains, par files) T1.1/Paper II NANOGrav data release (Zenodo) data/T1.1_pulsar_timing/nanograv_15yr/
NANOGrav 15 yr stochastic-analysis cores (joint CURN chain) T1.1 v4 nanograv/15yr_stochastic_analysis (GitHub, presampled cores; commit-pinned) same tree
NANOGrav 15 yr KDE free spectra v1.1.0 T1.1 robustness NANOGrav release (Zenodo) same tree
PPTA DR3 joint CURN chain (chain_commonNoise_pl_nocorr_freegam_DE440.npy) T1.1 v3/v4 PPTA DR3 analysis repository (commit-pinned) data/T1.1_pulsar_timing/ppta_dr3/
EPTA DR2 maximum-likelihood noise solutions T1.1 v3 EPTA DR2 release data/T1.1_pulsar_timing/epta_dr2/
ATNF pulsar catalogue v2.8.1 distances ATNF psrcat data/T1.1_pulsar_timing/
SPARC mass models T2/T3 SPARC database (Lelli, McGaugh & Schombert) data/T2/sparc/
El-Badry+21 eDR3 wide-binary catalog (all_columns_catalog.fits.gz, ~1.3 GB) T2.5/T2.5b catalog release (Zenodo) data/T2/wb/
Sun+09 Chandra group tables T3 ApJ 693, 1142 e-print/CDS tables data/T3/sun09/
Vikhlinin+06 relaxed-cluster fits T3 astro-ph/0507092 e-print source data/T3/vikhlinin06/
ACCEPT cluster tables (table1.dat.gz, table5.dat.gz) T3 ACCEPT archive data/T3/accept/
SLUGGS/Alabi+16 tracer-mass tables T3 MNRAS 460, 3838 e-print tables data/T3/sluggs/

Planck 2018 values enter as locked constants inside the scripts (no download).

Staging rule (protocol-relevant): the guards treat file modification times as staging times. Stage data by direct download after the relevant freeze; if extracting archives that restore historical mtimes, touch the extracted tree and record the download event (see the guard docstrings).

The pre-registration protocol

t2_guard.py / t3_guard.py are imported by every comparison script and refuse to run unless: the frozen ledger exists, the analysis tree is git-clean, the freeze commit is an ancestor of HEAD, and every comparison-data file was staged after the freeze. Freeze scripts (t2_predictions_freeze.py, t3_predictions_freeze.py) compute and lock predictions — including both branches wherever a derivation forks — before any comparison data is staged. Revisions are versioned, reasons logged, superseded versions never deleted (see the revisions blocks inside the ledgers, including the pre-data wide-binary coefficient correction and the T2.5b control-repair nuisances frozen for Gaia DR4).

This public snapshot carries the ledgers and their embedded timestamps; the commit hashes inside them refer to the private development history, whose full ancestry is available for inspection on request. The externally binding timestamps are the public deposit dates (DOI / arXiv).

Frozen headline predictions: Gaia DR4 wide binaries δṽ = 0.12–0.17 (single fork; kill if Newtonian; 2026-12-02) · PTA ceiling K₉₅ = 5.6×10⁻¹³ s² kpc⁻¹ · condensation break σ_crit(m) window [250, 1000] km s⁻¹ with the measured pin m ≈ 8 eV · primordial tensors r < 3×10⁻¹⁶ (any detection is a double kill).

Script guide

Guards and freezest2_guard.py, t3_guard.py (enforcement); t2_predictions_freeze.py, t3_predictions_freeze.py (the freezes).

T1.1 — pulsar-timing search and ceiling (Paper II): t1_1_pulsar_distance_regression.py (the regression-on-detections estimator, retained as the failure-mode record — Paper II §3 explains why this class is excluded from inference), t1_1_v2_common_gamma_envelope.py (audit-corrected: index conditioning + envelope), t1_1_v3_cross_pta.py (NANOGrav × PPTA DR3 × EPTA DR2), t1_1_v4_joint_vs_joint.py (method-matched consistency; the 12/25 reabsorption), t1_1_freespectrum_robustness.py, t1_1_method_comparison_figure.py.

T2 — branch discrimination (Papers I/III): t2_0_squeeze.py (decoherence/squeeze trade-off atlas), t2_1_compare_ceiling.py (frozen branch predictions vs the ceiling), t2_2_sightline_entropy.py, t2_3_early_universe.py (ΔN_eff, FIRAS gates), t2_4_a0_of_z.py (the a₀(z) lock), t2_5_dr3_dryrun.py (eDR3 wide-binary dry-run, both contested estimator families), t2_5b_control_repair.py (the control-bin repair; nuisances frozen for DR4), t2_survival.py (assembled verdicts).

T3 — the σ-resolved RAR (Paper V): t3_1_anchors.py through t3_5_systematics.py (anchors, shelf, break fit, discriminator grid, fork forest), t3_6_fb_baseline.py (the partial-restoration f_b(σ) model and the m = 7.9 eV pin), t3_8_synthesis.py (verdicts vs the frozen ledger), t3_7_mixed_method.py (caustic × X-ray mixed-method amplitude; the adverse result), t3_9_stellar_photometry.py (per-system 2MASS XSC stellar budgets), t3_10_remaining_deciders.py (the combined budget refit — σ_b = 628 [599, 679] km s⁻¹ → m = 8.2 [7.7, 8.5] eV — plus the caustic-concentration probe).

D-chain — conditional derivations (the theory record, D0–D36): b2_derivations.py (the base chain), b2_epsilon_decision.py (1/6 vs 1/2π), b2_gph_counting.py (G_ph), b2_lambda_bookkeeping.py / b2_f_floor_test.py / b2_ossw_saturation.py (the separation-theorem exhaustion), b2_theta2_identity.py / b2_consistency_triad.py (the second-order law), b2_dm_implications.py / b2_production.py (carrier identity), b2_x32_coexistence.py, b2_cw_matching.py, b2_screen_eigenvalue.py / b2_notch_bdg.py / b2_mode_selection.py (the C_T program), b2_phonon_stability.py (D22), b2_vortices.py (D23), b2_rsf_outer_halo.py (D24), b2_isolated_giants.py (D25), b2_quantum_breaking.py (D26), b2_qm_audit.py (D27: the quantum-mechanical particle audit), b2_t9_fragmentation.py (D28: the mode-selection theorem), t10_collapse_sim.py / t10b_time_extension.py (D29: quintic-GPP collapse + the condensation channel), b2_wave_kinetic_rate.py (D30: the phase-ordering ladder), b2_tangle_decay.py (D31: 3D tangle decay; the pre-registered criterion's recorded failure), b2_substrate_consistency.py (D32: the resolution-lock and canonical-inheritance theorems), b2_high_g_tail.py (D33: the derived ν₁(x) tail and the ephemeris fork kill), b2_linear_cosmology.py (D34: branch selection and the establishment gate), b2_relativistic_ledger.py (D35: c_gw, PPN, and the SMBH near-zone falsifier), b2_supersonic_drag.py (D36: bar–halo drag; the adverse comparison).

Hardening and figures: p1_referee_hardening.py (Paper I checks + the portfolio lint), p2_…p4_…, p_letter_hardening.py (per-paper claim verification), paper_figures.py (all publication figures), fig_p1_architecture.py (Paper I Fig. 1), fig_t3_completions.py (Paper V Fig. 4).

Reproducing

Python ≥ 3.11 with numpy, scipy, astropy, matplotlib, pandas (T1.1 chain handling additionally uses la_forge and ceffyl-format products). Each script is standalone (python analysis/<script>.py) and writes its JSON record to derived/; comparison scripts self-verify the protocol via the guards. analysis/paper_figures.py regenerates every figure.

AI contribution

This research program was carried out with the help of Claude Fable 5, an AI research system built by Anthropic, which performed the derivations, wrote and executed the analysis code, and drafted the manuscripts; the human author (Marko Jevremovic) directed the program and takes sole responsibility for the content. Current publication policies do not permit AI systems to hold authorship; each manuscript carries a contribution statement recording that co-authorship was intended.

License and citation

Code: MIT (see LICENSE). Citation metadata: CITATION.cff (the Zenodo concept DOI is added there at first release). Public repository: https://github.com/MrJevrem/entropic-superfluid-gravity — a snapshot of analysis/ + derived/ mirrored by sync_public.sh from the private development repository.

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Analysis code and frozen prediction ledgers for entropic gravity on a dark superfluid — Gaia DR4 kill test 2026-12-02

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